Lamiaceae

O. acutidens (Hand.-Mazz.) Ietswaart, Tax. Rev. Origanum 62 (1980). Syn: Amaracus haussknechtii (Boiss.) Briq. var. acutidens Hand.-Mazz. in Ann. Nat. Hofmus. Wien 27:420 (1913)! Ic: Ietswaart, op. cit. 69, t. 11; 70, t. 12 (1980).
Subshrub to 50 cm, ± glabrous. Branches to 10 pairs per stem, to 15 cm. Leaves subsessile, ovate, 5-30 x 4-24 mm, obtuse, glaucous. Spicules 10-35 x 10-30 mm. Bracts suborbicular, obovate or elliptic, 7-22 x 6-20 mm, acute or obtuse, yellowish-green, rarely tinged purple. Verticillasters 2-12-flowered. Calyx 5-7.5 mm; upper lip with ± broadly triangular-ovate or triangular teeth to c. 1/2; lower lip ± as long as upper lip, consisting of narrowly triangular, ± acuminate teeth. Corolla white or tinged pink, 10-16 mm. Upper filaments to 2 mm, lower to 10 mm. Fl. 6-8. Calcareous and non-calcareous rocks, slopes and screes, 1000-3000 m.
Type: [Turkey B9 Bitlis] Hänge zwischen Goro und Kede im Sassun, 1200-1600 m, 12 viii 1910, Handel-Mazzetti 2913 (holo. W! iso. WU!).
E. Anatolia. A7 Gümüşane: Gümüşane, 1220 m, Balls 1707! A8 Erzurum: Ispir, 1300 m, Barclay 836! A9 Çoruh/Kars: Yalnizçam Da., 2440 m, Tong 465(!). B6 Sivas: c. 18 km S. of Zara, c. 1500 m, Sorger 69-37-31! B7 Erzincan: Keşiş Da. above Cimin, 1900-2100 m, D. 31771! Tunceli: c. 27 km N. of Tunceli, c. 960 m, Hub.-Mor. 16267! Malatya: nr Malatya, Gleisberg 1936: 205! B8 Bitlis: Kambos Da. above Hurmuz, D. 23402(!). Erzurum: gorge between Tercan and Selepur, D. 30953! Bingöl: Bingöl Da. between Karliova and Çat, 2000 m, T. Bay top (ISTE 18290)! C9 Hakkari: MorinosDe., opposite Marunis, 1500 m, D. 45325! C10 Hakkari: Cilo Da. in Diz De., c. 1950 m, D. 24283!
Endemic? Ir.-Tur. element. Related to O. haussknechtii, from which it differs by its larger, usually yellowish-green bracts, longer ± acuminate teeth to the lower lip of calyx, and white or pinkish corolla. A record of O. haussknechtii from C9 Siirt (d. Ramoran, Herakol Da. N. of Geziret, 2300-2400 m, Nâbělek 1515) presumably belongs to O. acutidens.